Chapter 7: Pain Management During Labour & Birth

Pain Management During Labour & Birth begins by outlining childbirth preparation methods, such as the Dick-Read method, which focuses on breaking the fear-tension-pain cycle, the Bradley method of partner-coached birth, and the Lamaze method, which utilizes mental conditioning and breathing techniques to enhance comfort. The text details the physiological sources of pain, including cervical dilation, uterine ischemia, and perineal stretching, while distinguishing between pain threshold and the variable nature of pain tolerance. A significant portion of the chapter is dedicated to nonpharmacological pain management strategies often supported by the gate control theory, which suggests that stimulating large-diameter nerve fibers can block pain impulse transmission. These strategies include cutaneous stimulation techniques like effleurage, sacral pressure for back labour, thermal stimulation, and hydrotherapy, alongside cognitive strategies such as focal points, imagery, and music. The chapter also describes specific breathing patterns, ranging from slow-paced to modified and patterned-paced breathing to prevent hyperventilation and respiratory alkalosis. Transitioning to pharmacological management, the summary covers systemic analgesics, including the use of nitrous oxide and opioids like fentanyl and morphine, while highlighting safety protocols regarding neonatal respiratory depression and the cautious use of naloxone. Regional anesthesia is explored comprehensively, distinguishing between epidural blocks, which provide continuous analgesia but carry risks of maternal hypotension and urinary retention, and subarachnoid (spinal) blocks, which are often used for Caesarean births and may lead to postdural puncture headaches requiring an epidural blood patch. The chapter concludes with a review of local interventions like pudendal blocks for the second stage of labour and the rare use of general anesthesia, where nurses must vigilantly monitor for aspiration pneumonitis and support neonatal resuscitation.